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| IC Card Pre-paid Diaphragm Meter |
The gas meters of the IGS series are credit gas meters and use an encrypted IC card as a data carrier. IGS series are credit gas meters and use an encrypted IC card as a data carrier. Our IGS system is optimally adapted to the needs of gas supply companies. Using the IC-card, information such as gas flow, meter status or unusual operating conditions of the meter are read. This allows the operator to get relevant data from the customer without on-site reading. The gas meter is suitable for various gas media. The integrated calibration system coordinates the movement of the valves in relation to the optimum gas flow. The excellent linearity of the error curve is guaranteed even at low flow rates. Due to the optimum rotating characteristics of the valves, the Qmin value remains stable and the gas meter is resistant to contamination. The IC-Card prepaid diaphragm gas meter meets the requirements of the EN1359:1998/A1:2006 and OIML R137-1 (2012) standards. 
Features Measurement method: Support amount measurement and gas measurement two ways, and can be switched Prepaid function: pay first and then use gas to solve the problem of charging and meter reading Overdraft function: Software system can freely set whether to allow overdraft gas Preventing gas hoarding: The purchase limit can be set to prevent users from hoarding gas and reduce the losses caused by gas price fluctuations of gas companies Alarm function: When valve, overflow, magnetic interference and other failures occur, the gas meter will alarm in the way of sound and display, and actively upload the network, and the abnormal meter can be monitored in time Prompt function: When the remaining gas volume and battery power are lower than the set value, the user is prompted to buy gas and replace the battery Remote valve control: built-in stop valve, can remotely control the valve, for emergencies or malicious arrears, remote valve close Anti-magnetic interference: When external magnetic field interference is detected, the gas meter will automatically close the valve and cut off the gas supply Low starting momentum: 1dm³/h, low starting flow, high measurement accuracy Step gas price (optional) : Realize a variety of step charging modes such as table end heating season and non-heating season, according to the function of the table Accurate measurement: Integrated temperature and pressure compensation, integrated system adjustment error curve
Parameters
| Nominal flow rate(m³/h) | 1.6 | 2.5 | 2.5 | | Maximum flow(m³/h) | 2.5 | 4 | 6 | | Minimum flow(m³/h) | 0.016 | 0.025 | 0.016 | | Pressure loss(Pa) | ≤250 | | Working pressure range(kPa) | 0.5~50 | Indication error | 0.1Qmax≤Q≤Qmax | ±1.5% | | Qmin≤0.1Qmax | ±3% | | Accuracy class | Level 1.5 | | Working voltage | External DC6V(4 5# alkaline batteries) | | Battery life | Depends on the data reporting period, it can take more than 1 year | | Data acquisition method | Double pulse | | Static working current | <30μA | | Support band | NB-IoT/GPRS Authorized frequency bands for public networks | | Communication distance | NB-IoT/GPRS Network coverage | | Communication cycle | Customize the hour, day, and month | | Enviromental parameter | Working temperature :-25℃~+55℃, working humidity :5%~93% no condensation |
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